Tongue switch



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C. A. PSILANDER TONGUE SWITCH Filed April 18. 1925 2 Sheets-Sheet 1 (liar/ea YE/Vanda? m Aug. 2a. 1923,

C. A. PSILANDER TONGUE SWITCH Filed April 18 1925 2 Sheets-Sheet 2' Patented Aug. 23, 1923.

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WHAnToN an. 6; COMPANY, rnconrona'rnn, or nes s-on, PENHSYLVANI PORATION OF PENNSYLVANIA..

TON UE appncati n filed April 18,

To all whom it may) concern:

Be it known that 1. CHARLES A. PSiLiAN one, a c1tizen of the United States, residing t Easton in the county of Northampton and State of lennsylrania,have invented certein new and useful Improvementsin Tlon-gue Switches, of which jthe following isa specification. 1 y j V .lkly invention relates to tongue switches and more particularly to means for prevent ing or obviating lost motion at the heel due to wear of the heel or of theheel socket or -of both. In ace-pending application, S812. No. 621,544; filed Feb. 27, 1923, I propose to accomplish this result through the medium of the switch body an element of which is capable of deflection to vary the diameter of the socket. I now propose-to vary this practice by effecting the desired compensatory adjustment solely'through an increment. inthe diameter of the heel of the tongue which specially constructed for this purpose. 2 tated in general terms therpresent invention resides in a switch tongue having a heel which is adjustable at will to secure a tight fit with relation to its complementalrecess or socket. Further stated, the invention embodies any switchtongue whereof the heel has an expansible element designed to accomplish the result stated." Itfu'rther embodies means for expanding such element at will. It further embodies 'asimple hold,- down for the tongue. 1 y I realize that the invention is susceptible of many specific embodiments and, by way 0t example. have illustrated a few and'will refer to them. more or 'less in detail, in the course of the following' description In the annexed dra win ;s,j I Figure 1 is a plan view ;oftheheel endv of the improved switch stru'ct-ure; the'heel; having a wall capable of radial deflection" to increase the diameter thereoi end established by an open slot the deflection being accomplished by'a wedge movable along the slot. I Fig. 2 is a section on line22 of Fig. 1.

' Fig, 3 is a plan view showing a bolt disposed radially of theheel f expansible portion thereof. w f .Fig. ts asecti on on line 4-4 of Fig.3.

or deflecting the its snares P a-r cess or socket'fi.

tree; 1

A COE- Fig. 5 is planiview ot a structure wherein the heel is expanded through themedium of callzlngtheslotwith plastic metal.

Assre'non TO WILLIAM g. 6 is asection "on line 6-56 of Fig. 5.

; I new;

Fig.7 is a plan view showing modifica- 5 constructed as usual, has va fiush bottom socket or r eoess 6 for the heel of the tongue. The switch tongue'Thas its heel Stormed withan arcuate or segmentalslot 9 which has a radial gap or passway 10. There is thus established a floating or expansible wall 11 which may be availed of to increase the diameterot the heel inorder to in detail a simple form of ticn of the slot with a vertical wedge or f 7 compensate tor'wea'r to 'thefend that the,

heel will have a normal ti 'ht fit in the re- Varions expedients may be resorted to for expanding th'e'heel. For example, re-

ferring to Figs. 1 and 2. 'the 'wall ll may he outwardlysprung or deflected by means i or a wedge ,12 introduced vertically into the slot 9 and moved alon the same to effect the rcquisite'expansion. The wedge 12 has lateral projections 'which take into ail-elongated recess 14 in the inner wall zofthe slot Qfand thus prevent the accidental d'isplacement or, the wedge the; recess 14:

having enteringfno'tches 15 for the projections 13 0t the'wedge. v

In Figs. Band 4. the adjustment is-etfected tln'oughthe medium of a radially 1.

disposed holt 16 and a captive nut 17. The

' letter bears against the wall 11' and is held from turning by stop 18; and the bolt impinges against the body ot'the heel. Evident-1y by tightening up on the bolt; "the r i head of which is,:accessibl'e -in an inspec t'i'on b02119. thewall' 11 will'be outwardly deflected nnfdenpressnre ofthelnut. In F fiand 6 expansion of the heel is provided" forby a plug 20 established by :calking the slot with plastic metal under.

exerted pressure, as by hammer"blows;

ldanifestly; the call: or plug can be removed when necessary simply by flowing the metal under the applicationofheat If desired, I

calking may be resorted to in conjunction with the wedges or other means of manual adjustment, but it is quite unnecessary because the open spaces are comparatively small and soon become calked in service by the natural dirt ot' the street or roadway.

In Figs. 7 and 8, an'upstanding bolt 2i, the head oi which is countersunk in the bo tom of the heel so as not to interrupt its flush bearing surface, co-operates with a wedge or shoe 22 slidable on the bolt and countersunk to receive a retaining nut 23.

figs. 7 and 8 also illustrate a simple form oi" hold-down which, while associated with the expanding element- 22, is not peculiar to that mode of adjustment, but is useful in connection with any of the embodiments. It includes a spring bar 24; which is introduced through opposed slotted portions of the switch body and hecl.' For example, the inner end 01"- the bar may engage a. boss 25 within the hollow portion of the heel. The holding bar bears at 26 against the switch body and beyond that point is formed with an aperture-d offset arm 27. Above the latter is a forked extension 28 which may be integral with the switch body. A bolt 29 connects the arm with the forked extension and by ightening up on its nut 30 the holding down pressure of the bar can be adjusted from time to' time as may be necessary. The accessible parts are preferably housed in an inspection boX or casing 31 Having described my invention, 1 claim l. A switch tongue whereof the heel is ca- I pable of bodily adjustment at will to expand or contract the same.

A switch tongue having heel.

3. A switch tongue having an .expansible heel. and means "for expanding it.

4'. A. switch tongue having an expansible heel. and self-contained means tor expanding it.

5. A'switch tongue whereof the heel has an integral element capable of radial adjustmentto vary the diameter oi? the heel.

6. A. switch tongue whereof the heel has an integral element capable of radial adjust ment to vary the diameter of the heel, and means for adjusting it.

'7. A switch tongue whereof the heel has an exp ansible a radially adjust ablewall. and self-contained means for holding it in the-adjusted position.

8 A. switchtongue whereo'l the heel has 'an integral radia lv adj stable wall, and

means cont-rolls, will tor adjusting it.

A switch tongue whereof the heel has an element capable of outward deflection to increase the diameter oi? the heel to compensate for wear, said element having an integral connection with the'body of the heel substantially the depth thereof.

10. A switch tongue whereof the heel has an element springing therefrom and capable of outward deflection to increase the diameter of the heel to compensate for wear.

ILA switch tongue whereoi the heel has a spaced element springing therefrom and capable of outward deflection to increase the diameter of the heel.

12. A switch tongue whereof the heel has a spaced element springing therefrom and capable of outward deflection to increase the diameter of the heel, and means for deflecting said element. I

13. A switch tongue whereof the heel has an integral radially adjustable wall spaced from the body of the heel, and means operative in the space for adjusting said wall.

M. A switch tongue whereof the heel is slotted to establish a floating wall.

15. A, witch tongue whereof the heel has an own slot flanking one of its side walls to provide for increasing the diameter of the heel. I

16. A switch tongue whereof the heel has a segmental slot to float one ot. the walls thereof, and means for deflecting said. well for heel expansion purposes.

17. A switch tongue whereof the heel has a segmental slot to float one of the walls thereof, and self contained means "for spacing said wall with relation to the bodyof the heel.

18, A switch structure, comprising the combination of a body having a tongue bed including a heel socket, and a switch tongue having a heel bodily sus'eptible oi modification at will to initiate or restore normal it with relation to the socket.

it). A switch structure, comprising the con'ib-imlt ion of a body having a tongue bed including a heel socket, a switch tongue having an expansible heel adapted to said socket, and means for expanding the heel to compensate for wear. 7

20. A switch structure. conu'irising the combination of a body having a tongue bed including a heel socket. a switch tongue cooperating with said body and having a heel provided with a radially adjustable wall, and means (To-operating therewith torestablishing tight bearing relation of the heel and socket. I i

21. A switch structure, comprising the combination of a body having a tongue bed including a heel socket. a switch tongue cooperating with said body and having a heel provided with a radially adjust-able wall a portion oi which is fixed with relation to the heel. and means for adjusting said wall to compensate for relative wear of the heel or socket.

22. A switch structure, comprising the combination of a body having a tongue bed including a heel socket. arswitch tongue 00- operating with said body and whereof the heel hasan element springing therefrom and.

means for deflecting said wallto insure nor-,

mal relative fit of the heel and socket.

A. switch structure, comprlsing the combination of body having a tongue bed including heel socket, a switch tongue hav ing an expansible heel capable of compensat- ..ing adjustment, a hold do wn member 111- crumed in the switch body to exert downward pressure onthe heel, andmeansfOr adjusting the leverage thereof; I

25. A switch structure, comprising the combination or" a bodyhaving a tongue bed inclucin'g a heel socket, and a switch tongue having a heel aii orded acflush bearing on the floor of said socket, said heel being radially expansible to establish a continuous side bearing, and means for holding it in the expanded state.

26. A switch structure, comprising the combination of a body having a tonguebed including a heel socket, a switch tongue whereof the heel is hollow and has a continuous bottom bearing and a continuous side bearing, an adjustable spring bar ex-' tending into and operating as a hold-down for the heel, a forked extension on the body above the outer end of the bar, and means engaging said extension and bar for regulating the holding down pressure of the bar.

Q'YIA switch structure; comprising the combination of a body having a tongue bed including a heel socket, a switch tongue having a heel aflt'orded a flush bearing in thebottom of the socket andcapable of lateral ex-' pansion to insure normal fit and wear with relation to the'side walls of the socket, and means for holding it in the expanded state. I 28. A switch structure,- oom prising the combination of a body having tongue bed including a heel socket, a switch tongue having a heel afforded a flush'bearing inthe bottom of the socket anocapable oi lateral expansion to insure normal fit and wear with relation to the side walls of the socket, and

means controllable at will torexpanding the heel and for holdlng state.

29. A switch structure, comprising the combination of a boc y having a tongue bed including a heel socket, a swltch tongue *having a. heel aifordeda flush bearing in the 7 bottom of thesocket and capable of lateral exoansion to insure normal fit and wear with it in the expanded I relation to the side walls of the socket,

means for holding it in the expanded state, and means effective to prevent rise of the. heel. Y a 3OQA switch structure, comprising the combination of abody having a heel socket of fixed diameter, a switch tongue having a heel of variable diameter, and selt-contained means for increasing the diameter of the heel to establish normal fit with relation to the socket. y I g 31. A switch structure, comprising the combination of a body having a heel socket ot' fixed diameter, and a switch tongue whereof the heel has an integer movable with relation thereto to initiate or restore normal lit of socket.

Intestiniony whereof I affix mysigna theoheel with respect to the 

